I started playing it last night for a couple of hours.
It seems ok, but doesn't really grab you straight away like other RPG's i can think of (well, FF). Also, whilst the graphics are certainly nice, they're very sparse.
Storyline seems pretty standard fare at the moment, but like you said, I'm 2 hours into a 3 disc game, so its got all the time in the world to pick up.
Battle system seems ok, if a little generic. And it's kinda annoying that you have to fight the same robot thing about 50 times at one point, although it does wonders for your stats. It gets better when you unleash your shadows too.
The one thing I do really like is the music. I believe it's composed by the guy who did the FF tunes, and it shows. Really good. Also, when you get to the first boss battle it kicks into this 80's hair metal song, totally unexpected and totaly, totally awesome! (Y)
Also, as frowned upon as it is, I prefer my anime with english dubs, so the English voice over is perfectly fine to me.
Overall I'd say its kept my interest so far, but really needs to kick up a notch to hold me for the long run.